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In-situ Sorbent Amendments: A New Direction in Contaminated Sediment Management

机译:原位吸收剂修正:污染沉积物管理的新方向

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摘要

Aquatic sediments form the ultimate repositories of past and ongoing discharges of hydrophobic organic compounds (HOCs) such as polychlorinated biphenyls (PCBs), many pesticides, and dioxins, as well as mercury (Hg) and methylmer-cury (MeHg). These sediment-bound pollutants serve as long-term exposure sources to aquatic ecosystems. Approximately 10% of the sediment underlying the United States' surface water is sufficiently contaminated with toxic pollutants to pose potential risks to fish and fish-eating wildlife and humans.1 Remediation of contaminated sediments remains a technological challenge. Traditional approaches do not always achieve risk reduction goals for human health and ecosystem protection and can even be destructive for natural resources. Though removal of contaminated sediment by dredging and disposal in a secure landfill can be effective under certain conditions, a recent study by the National Research Council found a wide range of outcomes.
机译:水生沉积物是疏水有机化合物(HOC)过去和正在进行的排放的最终储存库,这些疏水性有机化合物例如多氯联苯(PCB),许多农药和二恶英以及汞(Hg)和甲基汞(MeHg)。这些与沉积物结合的污染物是水生生态系统的长期暴露源。美国地表水下面约10%的沉积物已被有毒污染物充分污染,从而对鱼类和以鱼类为食的野生动物和人类构成潜在风险。1污染的沉积物的修复仍然是一项技术挑战。传统方法并非总能达到降低人类健康和生态系统风险的目标,甚至可能破坏自然资源。尽管在某些情况下通过挖泥和将其处置在安全的垃圾填埋场中可以有效去除污染物,但国家研究委员会最近进行的一项研究发现了多种结果。

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  • 来源
    《Environmental Science & Technology》 |2011年第4期|p.1163-1168|共6页
  • 作者单位

    University of Maryland Baltimore County, Baltimore, Maryland 21250, United States;

    rnStanford University, Stanford, California, United States;

    rnNorwegian Geotechnical Institute, Oslo, Norway, University of Life Sciences, As, Norway Stockholm University, Stockholm, Sweden;

    rnNewcastle University, Newcastle upon Tyne, United Kingdom;

    rnExponent,Alexandria,Virginia,United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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